You might want to wait until the 2005 Theme Camp list is published (not sure exactly when that will be). Then you can browse all the registered camps and send an email to the camps that you are interested in joining and see if they are looking for help or new campers.

In the mean time you can browse the 2004 list and do the same thing, just realize that some of those camps will not be returning, and that some of the contact info might be out of date or incorrect.